The file cannot be saved (what if the folder is damaged and cannot be read)

Hello everyone , I meet you again , I'm your friend, Quan Jun .

To use EmguCV, First of all, you need to go to the official website to download the installation package （ In addition to downloading the installation package , There are several other ways ）. After installation , You have to configure environment variables . No more details here . There are many online tutorials . Here I share a download link of the official website ：https://sourceforge.net/projects/emgucv/files/emgucv/

Here we use the form program to explain , First create a new form

1. quote EmguCV Of DLL：using Emgu.CV;using Emgu.CV.Structure;

hold Emgu.CV.UI Drag this class library to the toolbox , such , We can use his controls . Drag one onto the form imageBox Control （EmguCV Control instead of .NET Control ） Two buttons （ General button ）.

The complete code of the form is as follows ：

    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        Mat img;

        private void btnRead_Click(object sender, EventArgs e)
        {
            // Mode one 
            img = CvInvoke.Imread("1000.jpg");
            CvInvoke.Imshow("img", img);
            CvInvoke.WaitKey(0);

            // Mode two 
            //Image<Bgr, Byte> img = new Image<Bgr, byte>("aa.jpg");// Load picture from file 
            //imageBox1.Image = img;
        }

        private void btnSave_Click(object sender, EventArgs e)
        {
            // Mode one 
            CvInvoke.Imwrite("new.jpg", img);
            MessageBox.Show(" Saved successfully ");

            // Mode two 
            //imageBox1.Image.Save(@"D:\new.jpg");
        }

Copy

I use two ways to read and save . But only method one can work normally . In the second way, the program is imageBox1.Image = img; This sentence is stuck . I haven't found the reason yet . However, the second method can be used .

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